Two pieces for organ
Stephen Chase
A
pedantic note in two parts Stephen Chase for organ
1. Find a pitch and a stop combination which, together, cause an acoustic anomaly between the instrument and the building within which it is housed.
2. Find a combination of tones and stops which, together, reproduce the first pitch as the most prominent difference/combination tone.
Compare and contrast.
Smooth transitions, sudden cuts, silences, the qualities of each.
Inverness, 10-v-21
For organ
Each new pitch (white notehead) may be assigned any octave, and assigned any manual (including pedalboard) or choice of stops that is not in use by the sustained black noteheads.
Black notehead = a note sustained through from the previous chord maintaining the same octave, manual, and choice of stops.
Choice of stops, octaves and manuals is free, with the aim of exploring different acoustic beating patterns.
Durations of chords are determined by the approximate number of acoustic beats that the player can count (any prime numbers greater that 11, lesser than 67).
Alternatively, apply the numbers below in any 5 non-repeating sequences (numbers = seconds) to the chords. The remaining two chords use the final digit from the last sequence.
